Question

这是我的模特

from django.contrib.contenttypes.fields import GenericForeignKey
from django.contrib.contenttypes.models import ContentType
import uuid

class PiO(models.Model): 
    uuid = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False) # surrogate
    person = models.ForeignKey(Person, on_delete=models.PROTECT, max_length=25, blank=True)
    content_type = models.ForeignKey(ContentType, on_delete=models.PROTECT) # for the various organization types
    object_id = models.UUIDField(primary_key=False, default=uuid.uuid4, editable=False) # the uuid of the specific org
    content_object = GenericForeignKey('content_type', 'object_id')

这是我的追溯

AttributeError: 'UUIDField' object has no attribute 'uuid4'.

请注意，这是特别引用object_id字段，不是 uuid（pk）字段。作为测试，我注释掉了object_id字段。我没有没有因为没有object_id字段而收到错误，并且检查了12行之后的新错误。

我搜索了确切的短语并得到了

No results found for "AttributeError: 'UUIDField' object has no attribute 'uuid4'".

我的所作所为与the docs一致。

我错过了什么？通用外键和/或内容类型的存在是否与它有关？

Answer 1

问题是您的模型字段uuid与模块uuid发生冲突。

一种选择是重命名模型字段，例如：

class PiO(models.Model): 
    id = models.UUIDField(primary_key=True, default=uuid4, editable=False)
    ...

另一种选择是将导入更改为from uuid import uuid4，并更新默认值以使用uuid4而不是uuid.uuid4。

from uuid import uuid4

class PiO(models.Model): 
    uuid = models.UUIDField(primary_key=True, default=uuid4, editable=False) # surrogate
    ...
    object_id = models.UUIDField(primary_key=False, default=uuid4, editable=False) # the uuid of the specific org

UUIDField没有属性uuid4

1 个答案: